Cheap flights from London Heathrow Airport to Buenos Aires from £531
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BUE
23 Jul — 30 Jul1
Return
1 adult
Economy
Cheapflights Tip: The best prices from London Heathrow to Buenos Aires are usually found in January or March, booked 61 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday
Cheap flight deals from Heathrow to Buenos Aires
Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Buenos Aires (BUE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 18 July 2025.
Explore the most affordable flight options available from Heathrow to Buenos Aires. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2025.
Mon 1/913:40LHR - EZE
1 stop22h 20mUnited Airlines
Mon 8/921:00EZE - LHR
2 stops28h 55mUnited Airlines
Deal found 17/7£782
Wed 3/922:05LHR - AEP
1 stop35h 35mAvianca
Mon 29/907:00AEP - LHR
1 stop28h 35mAvianca
Deal found 17/7£793
Thu 11/922:05LHR - EZE
1 stop30h 05mAvianca
Mon 22/901:40EZE - LHR
1 stop33h 55mAvianca
Deal found 18/7£796
Thu 13/1115:15LHR - EZE
2 stops34h 10mTurkish Airlines
Fri 21/1123:55EZE - LHR
2 stops31h 00mTurkish Airlines
Deal found 16/7£800
Mon 17/1117:30LHR - EZE
1 stop17h 25mLufthansa
Thu 27/1117:45EZE - LHR
1 stop18h 05mLufthansa
Deal found 17/7£803
Thu 13/1108:55LHR - AEP
2 stops29h 45mSWISS
Tue 25/1114:55AEP - LHR
2 stops22h 25mSWISS
Deal found 16/7£816
Mon 25/820:45LHR - EZE
2 stops37h 00mBritish Airways
Tue 9/901:40EZE - LHR
1 stop33h 55mBritish Airways
Deal found 17/7£819
Mon 20/1009:30LHR - EZE
3 stops57h 00mAir Canada
Mon 10/1116:45EZE - LHR
3 stops35h 25mAir Canada
Deal found 17/7£821
Thu 20/1113:25LHR - AEP
2 stops30h 45mAir Canada
Wed 3/1213:35AEP - LHR
2 stops38h 35mAir Canada
Deal found 18/7£830
Sun 9/1119:05LHR - AEP
2 stops23h 55mLATAM Airlines
Mon 1/1214:55AEP - LHR
1 stop20h 10mLATAM Airlines
Deal found 16/7£842
Mon 24/1106:05LHR - EZE
2 stops28h 00mAmerican Airlines
Thu 4/1221:00EZE - LHR
1 stop22h 10mAmerican Airlines
Deal found 18/7£852
Tue 18/1109:10LHR - EZE
2 stops18h 50mLATAM Airlines
Tue 9/1202:30EZE - LHR
2 stops38h 05mLATAM Airlines
Deal found 16/7£857
Best flights from Heathrow to Buenos Aires
Discover carefully curated flight deals from Heathrow to Buenos Aires that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 July 2025.
Mon 1/913:40LHR - EZE
1 stop22h 20mUnited Airlines
Mon 8/921:00EZE - LHR
2 stops28h 55mUnited Airlines
Deal found 17/7£782
Wed 3/922:05LHR - AEP
1 stop35h 35mAvianca
Fri 26/907:00AEP - LHR
1 stop28h 35mAvianca
Deal found 18/7£789
Thu 13/1115:15LHR - EZE
2 stops34h 10mTurkish Airlines
Fri 21/1123:55EZE - LHR
2 stops31h 00mTurkish Airlines
Deal found 16/7£800
Mon 17/1117:30LHR - EZE
1 stop17h 25mLufthansa
Thu 27/1117:45EZE - LHR
1 stop18h 05mLufthansa
Deal found 17/7£803
Tue 11/1113:00LHR - EZE
2 stops29h 10mAir Canada
Wed 26/1116:45EZE - LHR
2 stops34h 45mAir Canada
Deal found 18/7£804
Mon 5/119:40LHR - EZE
1 stop25h 15mIberia
Mon 26/114:20EZE - LHR
1 stop15h 55mIberia
Deal found 17/7£809
Thu 13/1108:55LHR - AEP
2 stops29h 45mSWISS
Tue 25/1114:55AEP - LHR
2 stops22h 25mSWISS
Deal found 16/7£816
Mon 25/820:45LHR - EZE
2 stops37h 00mBritish Airways
Tue 9/901:40EZE - LHR
1 stop33h 55mBritish Airways
Deal found 17/7£819
Sun 9/1119:05LHR - AEP
2 stops23h 55mLATAM Airlines
Mon 1/1214:55AEP - LHR
1 stop20h 10mLATAM Airlines
Deal found 16/7£842
Tue 11/1108:15LHR - AEP
2 stops29h 35mMultiple Airlines
Wed 26/1109:00AEP - LHR
2 stops29h 30mMultiple Airlines
Deal found 18/7£845
Mon 24/1106:05LHR - EZE
2 stops28h 00mAmerican Airlines
Thu 4/1221:00EZE - LHR
1 stop22h 10mAmerican Airlines
Deal found 18/7£852
Thu 11/922:05LHR - EZE
1 stop30h 05mAvianca
Mon 22/901:40EZE - LHR
1 stop33h 55mAvianca
Deal found 18/7£796
Direct flights from Heathrow to Buenos Aires
Explore direct flight options from Heathrow to Buenos Aires based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 July 2025.
Fri 21/1122:00LHR - EZE
Nonstop16h 45mBritish Airways
Thu 11/1213:35EZE - LHR
Nonstop16h 00mBritish Airways
Deal found 16/7£1,003
Mon 24/1122:00LHR - EZE
Nonstop16h 45mIberia
Mon 8/1213:35EZE - LHR
Nonstop16h 00mIberia
Deal found 17/7£4,626
Last-minute flights from Heathrow to Buenos Aires
Discover last-minute flight deals from Heathrow to Buenos Aires. Data last updated 18 July 2025 and is based on user searches.
Fri 18/706:10LHR - EZE
1 stop17h 40mMultiple Airlines
Sun 27/713:00EZE - LHR
1 stop17h 35mMultiple Airlines
Deal found 16/7£844
Wed 23/716:35LHR - EZE
1 stop19h 00mBritish Airways
Wed 30/718:10EZE - LHR
1 stop16h 45mBritish Airways
Deal found 18/7£847
Wed 23/706:30LHR - AEP
2 stops38h 30mMultiple Airlines
Wed 30/722:55AEP - LHR
1 stop36h 10mMultiple Airlines
Deal found 18/7£1,168
Wed 23/706:40LHR - EZE
2 stops22h 10mMultiple Airlines
Wed 30/719:14EZE - LHR
2 stops39h 51mMultiple Airlines
Deal found 18/7£1,214
Wed 23/718:45LHR - EZE
2 stops21h 13mLATAM Airlines
Wed 30/712:58EZE - LHR
2 stops24h 17mLATAM Airlines
Deal found 18/7£1,223
Wed 23/709:20LHR - EZE
1 stop28h 25mDelta
Wed 30/720:10EZE - LHR
2 stops30h 15mDelta
Deal found 18/7£1,332
Fri 25/710:05LHR - EZE
2 stops28h 45mAmerican Airlines
Sat 4/1021:15EZE - LHR
1 stop20h 25mAmerican Airlines
Deal found 18/7£970
Sat 26/713:40LHR - EZE
1 stop22h 20mUnited Airlines
Tue 30/921:00EZE - LHR
1 stop34h 35mUnited Airlines
Deal found 18/7£1,063
Sun 27/721:20LHR - AEP
1 stop23h 40mLATAM Airlines
Tue 5/814:55AEP - LHR
1 stop20h 10mLATAM Airlines
Deal found 16/7£953
Sun 27/722:05LHR - AEP
1 stop35h 35mAvianca
Mon 4/807:00AEP - LHR
1 stop28h 35mAvianca
Deal found 18/7£1,523
Mon 28/722:30LHR - EZE
1 stop26h 55mAeromexico
Thu 7/823:25EZE - LHR
1 stop36h 35mAeromexico
Deal found 16/7£1,182
Wed 20/821:20LHR - AEP
1 stop17h 10mLATAM Airlines
Sat 6/1208:50AEP - LHR
2 stops26h 15mLATAM Airlines
Deal found 18/7£894
One-way flights from Heathrow to Buenos Aires
Search for one-way flight options from Heathrow to Buenos Aires. Find affordable one-way fares based on user searches. Data last updated 18 July 2025.
Tue 4/1113:40LHR - AEP
3 stops26h 20mMultiple Airlines
Deal found 18/7£531
Wed 27/807:45LHR - EZE
2 stops26h 40mMultiple Airlines
Deal found 16/7£533
Thu 30/1012:05LHR - EZE
1 stop23h 15mUnited Airlines
Deal found 18/7£567
Wed 1/1022:30LHR - EZE
1 stop26h 55mAeromexico
Deal found 18/7£576
Sat 15/1119:40LHR - EZE
2 stops40h 24mLATAM Airlines
Deal found 16/7£594
Wed 17/921:20LHR - AEP
1 stop18h 40mLATAM Airlines
Deal found 17/7£604
Sun 31/822:05LHR - EZE
2 stops35h 30mAvianca
Deal found 16/7£621
Sat 25/1022:05LHR - AEP
1 stop35h 35mAvianca
Deal found 18/7£637
Cheapflights Fare Finder
Customise your flight search to find flights from Heathrow to Buenos Aires that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 18 July 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Buenos Aires that are best for you.
Fly from
Heathrow
Fly to
Buenos Aires
Route
Depart
Return
Price
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Mon 1/9
13:40-08:00
1 stop22h 20m
Buenos Aires Ministro Pistarini
Mon 8/9
21:00-05:55
2 stops28h 55m
£782
LondonBuenos Aires
LHR - AEP
LHRAEP
London Heathrow
Wed 3/9
22:05-05:40
1 stop35h 35m
Buenos Aires Jorge Newbery
Mon 29/9
07:00-15:35
1 stop28h 35m
£793
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Thu 11/9
22:05-00:10
1 stop30h 05m
Buenos Aires Ministro Pistarini
Mon 22/9
01:40-15:35
1 stop33h 55m
£796
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Thu 13/11
15:15-22:25
2 stops34h 10m
Buenos Aires Ministro Pistarini
Fri 21/11
23:55-09:55
2 stops31h 00m
£800
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Mon 17/11
13:30-07:55
1 stop21h 25m
Buenos Aires Ministro Pistarini
Fri 28/11
17:45-16:50
1 stop20h 05m
£803
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Mon 5/1
19:40-17:55
1 stop25h 15m
Buenos Aires Ministro Pistarini
Mon 26/1
14:20-09:15
1 stop15h 55m
£809
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Tue 13/1
11:10-15:10
2 stops31h 00m
Buenos Aires Ministro Pistarini
Wed 28/1
16:45-06:30
2 stops34h 45m
£810
LondonBuenos Aires
LHR - AEP
LHRAEP
London Heathrow
Thu 13/11
08:55-11:40
2 stops29h 45m
Buenos Aires Jorge Newbery
Tue 25/11
14:55-16:20
2 stops22h 25m
£816
LondonBuenos Aires
LHR - EZE
LHREZE
London Heathrow
Mon 25/8
20:45-05:45
2 stops37h 00m
Buenos Aires Ministro Pistarini
Tue 9/9
01:40-15:35
1 stop33h 55m
£819
LondonBuenos Aires
LHR - AEP
LHRAEP
London Heathrow
Thu 20/11
13:25-17:10
2 stops30h 45m
Buenos Aires Jorge Newbery
Wed 3/12
13:35-07:10
2 stops38h 35m
£830
Flights are sorted by cheapest return flights first.
Deals found on 18/7
Showing 1-10 of 23 results
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Best time to book a flight from Heathrow to Buenos Aires
Have a flexible travel schedule? Discover the best time to fly to Buenos Aires from Heathrow with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from London Heathrow Airport to Buenos Aires
How far ahead should I book a flight from London Heathrow Airport to Buenos Aires?
Use this chart to determine the optimal time to book a return flight from Heathrow to Buenos Aires. Price data was last updated on 11 July 2025.
Booking 61 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Buenos Aires. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from London Heathrow Airport to Buenos Aires?
Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Buenos Aires (average of £1,012). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,250). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from LHR to BUE?
Find hourly flight availability from Heathrow to Buenos Aires. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 July 2025.
It’s typically best to fly out from London Heathrow Airport to Buenos Aires in the morning. Doing so could potentially save you 20% on the flight price compared to flying in the evening, which is usually more expensive.
What is the cheapest day to fly from London Heathrow Airport to Buenos Aires?
Use this chart to determine the cheapest time to fly return from Heathrow to Buenos Aires. Price data was last updated on 16 December 2024.
Travellers seeking maximum savings on their London Heathrow Airport to Buenos Aires flight should consider departing on Sunday at midday when fares are most often at their lowest. Friday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Buenos Aires
Get insights into the airlines that provide service to Buenos Aires. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Buenos Aires. Reviews last updated 18 July 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Buenos Aires, such as LATAM Airlines, SWISS, andAeromexico. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
I had mixed feelings regarding this flight. Called several times Latam and Delta regarding the purchase of checked baggage and price. I was told 80 dollars, could not buy it ahead of time,, they told me it was not Possible, that I had to buy at the airport. Check in my luggage the attendant says 80 dollars but I was charged 200 . No one could get me a solid answer why. Very disappointing
Related info for your journey
Find useful and relevant information for your journey from Heathrow to Buenos Aires. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What are the cheapest airlines flying from London Heathrow Airport to Buenos Aires round-trip?
Our cheapest airline available from London Heathrow Airport to Buenos Aires is United Airlines. Our recent data shows that you can find tickets from as low as £782 on this airline. Additional options worth looking into are Avianca and Turkish Airlines, starting at £789 and £800 round-trip. United Airlines is 18% cheaper than the average price of flights available within the next 90 days to this destination.
What are the cheapest airlines to fly from London Heathrow Airport to Buenos Aires one-way?
£567 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Aeromexico and LATAM Airlines, with prices starting from £576 and £594, respectively.
What are the cheapest flights from London Heathrow Airport to Buenos Aires?
Looking at all options, your cheapest flight can be booked for £886. While the most popular route (London Heathrow - Buenos Aires Ministro Pistarini) can be booked for £784 on average our data indicates £998 when flying from London Heathrow Airport to Buenos Aires.
Can I find deals for business class flights from Heathrow to Buenos Aires?
Yes. Cheapflights offers flight deals from Heathrow to Buenos Aires by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London Heathrow Airport to Buenos Aires?
Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Buenos Aires (average of £1,012). Flying from London Heathrow Airport to Buenos Aires in December is currently the most expensive (average of £1,250). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
Explore flights to Buenos Aires departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 18 July 2025.
Top 8 airlines flying from Heathrow to Buenos Aires
Discover the top 8 airlines that operate flights from Heathrow to Buenos Aires. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 18 July 2025.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Heathrow to Buenos Aires?
When you search for this flight from Heathrow to Buenos Aires, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.
Why should you use Cheapflights to find cheap flight tickets from Heathrow to Buenos Aires?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Heathrow to Buenos Aires.
Can Cheapflights find flights from Heathrow to Buenos Aires with no change fees?
Yes, we can. To see specific flights from Heathrow to Buenos Aires with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from Heathrow to Buenos Aires become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Buenos Aires from Heathrow today and book when prices fit your budget.
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